Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Loan Composition) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Commercial real estate — owner occupied	$ 212,698	$ 203,476
Commercial real estate — non-owner occupied	479,061	484,427
Land development	47,503	42,666
Construction	169,894	161,562
Multi-family	184,490	167,868
1-4 family	33,255	34,340
Total commercial real estate	1,126,901	1,094,339
Commercial and industrial	466,277	462,321
Direct financing leases, net	32,724	33,170
Home equity and second mortgages	8,377	8,438
Other	23,367	20,789
Total consumer and other	31,744	29,227
Total gross loans and leases receivable	1,657,646	1,619,057
Allowance for loan and lease losses	20,449	20,425	$ 18,638	$ 18,763
Deferred loan fees	1,000	1,402
Loans and leases receivable, net	$ 1,636,197	$ 1,597,230

Commercial Real Estate Loans Receivable - 1-4 Family

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Commercial Real Estate Loans Receivable - Multi-Family

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Commercial Real Estate Loans Receivable - Non-Owner Occupied

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Commercial Real Estate Loans Receivable - Owner Occupied

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Loans and lease receivable, gross Home equity loans and second mortgage loans

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Loans and Leases Receivable, Gross, Total Consumer and Other

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Loans and Leases Receivable and Loans Held for Sale, net of allowance for loan loss and deferred loan fees.

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The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of consumer loans and leases not otherwise specified in the taxonomy. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of loans issued to commercial and industrial institutions. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes real estate loans and loans covered under loss sharing agreements.

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Amount before allowance of commercial construction loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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Amount before allowance of commercial loans to develop land for sale or construction thereon. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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Amount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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